Huge input lag on ultimate team mode - PS5 Digital Edition

I used to experience some input lag once in a while, mostly at peak hours, as it is known.

The game has become unplayable at all hours for a month now.

The players move too slowly and there is a huge delay between my inputs and players actions. Players can't move, turn, run.

I have tried all the troubleshooting steps.

Checked my connection with my isp. (my connection is excellent)
Upgraded to 1gpps.
Used wired, bought new lan cable.
Used wireless.
Tried different hours.
Changed router ports.
Reinstalled the game multiple times.
Cleared ps5 cache.
Tried every suggested visual setting available on the internet.

Nothing works. It's a shame.

It's been very frustrating trying to figure out what is the problem, and getting no help from the support.
Even an answer that the game is broken and you shouldn't expect it to be fixed would be appreciated.
Instead, the support chat encourages me to keep playing and my problem will get fixed soon.

Speechless.